Single nanocrystal anti-stokes shifted superfluorescence

2021 ◽  
Author(s):  
Kory Green ◽  
Kai Huang ◽  
Gang Han ◽  
Shuang Fang Lim
Keyword(s):  
Anti Stokes

Anti-Stokes Luminescence of Bulk and Thin-Film β-InSe under Infrared Optical Excitation

JETP Letters ◽  
2020 ◽  
Vol 112 (3) ◽  
pp. 145-149
Author(s):  
S. N. Nikolaev ◽  
M. A. Chernopitsskii ◽  
V. S. Bagaev ◽  
V. S. Krivobok
Keyword(s):  
Thin Film ◽  
Optical Excitation ◽  
Anti Stokes

scholarly journals Frequency-domain study of nonthermal gigahertz phonons reveals Fano coupling to charge carriers

2020 ◽  
Vol 6 (51) ◽  
pp. eabd4540
Author(s):  
Thomas Vasileiadis ◽  
Heng Zhang ◽  
Hai Wang ◽  
Mischa Bonn ◽  
George Fytas ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Acoustic Waves ◽  
Lamb Waves ◽  
Charge Carriers ◽  
Acoustic Phonons ◽  
Phonon Spectra ◽  
Electron Hole Plasma ◽  
Nonequilibrium Conditions ◽  
Microelectronic Components ◽  
Anti Stokes

Telecommunication devices exploit hypersonic gigahertz acoustic phonons to mediate signal processing with microwave radiation, and charge carriers to operate various microelectronic components. Potential interactions of hypersound with charge carriers can be revealed through frequency- and momentum-resolved studies of acoustic phonons in photoexcited semiconductors. Here, we present an all-optical method for excitation and frequency-, momentum-, and space-resolved detection of gigahertz acoustic waves in a spatially confined model semiconductor. Lamb waves are excited in a bare silicon membrane using femtosecond optical pulses and detected with frequency-domain micro-Brillouin light spectroscopy. The population of photoexcited gigahertz phonons displays a hundredfold enhancement as compared with thermal equilibrium. The phonon spectra reveal Stokes–anti-Stokes asymmetry due to propagation, and strongly asymmetric Fano resonances due to coupling between the electron-hole plasma and the photoexcited phonons. This work lays the foundation for studying hypersonic signals in nonequilibrium conditions and, more generally, phonon-dependent phenomena in photoexcited nanostructures.

scholarly journals Selective Imaging of Microplastic and Organic Particles in Flow by Multimodal Coherent Anti-Stokes Raman Scattering and Two-Photon Excited Autofluorescence Analysis

2021 ◽  
Vol 93 (12) ◽  
pp. 5234-5240
Author(s):  
Tomoko Takahashi ◽  
Krzysztof Pawel Herdzik ◽  
Konstantinos Nikolaos Bourdakos ◽  
James Arthur Read ◽  
Sumeet Mahajan
Keyword(s):  
Raman Scattering ◽  
Two Photon ◽  
Organic Particles ◽  
Anti Stokes

scholarly journals Ideal pairing of the Stokes and anti-Stokes photons in the Raman process

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Kishore Thapliyal ◽  
Jan Peřina
Keyword(s):  
Raman Process ◽  
Anti Stokes

Optical response based on Stokes and anti-Stokes scattering processes in cavity optomechanical system

2021 ◽  
Vol 20 (3) ◽  
Author(s):  
Tie Wang ◽  
Cheng-Hua Bai ◽  
Dong-Yang Wang ◽  
Shutian Liu ◽  
Shou Zhang ◽  
...  
Keyword(s):  
Optical Response ◽  
Optomechanical System ◽  
Anti Stokes ◽  
Cavity Optomechanical System

scholarly journals Anti-Stokes Raman Scattering of Single Carbyne Chains

ACS Nano ◽  
2021 ◽  
Author(s):  
Cla Duri Tschannen ◽  
Martin Frimmer ◽  
Georgy Gordeev ◽  
Thiago L. Vasconcelos ◽  
Lei Shi ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Anti Stokes
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